My sister Jenny

I'm Ross 34 single doing quite well and have my own home. I've never been a ladies man and have paid for the sex I've had up to my deal with Jenny. Jenny 27 is the youngest of 4 and enjoys having a good time, our other 2 siblings are Kevin 36 married to Katherine and 3 children and live interstate. Than their Karen 29 married to David and they have 1 child and live across the city from me. Our parents George and Rebecca are both lawyers and travel a lot, Jenny lived at home with them and had a party while they were away. It wasn't anything new for her, except on the occasion leading up our deal there was a big problem for Jenny. There was an antique vase that belonged to our mother Rebecca. During the party, it got smashed and Jenny as terrified of Rebecca's reaction to that. The vase was old but not unique there are lots of them around. But they still were expensive as far as Jenny was concerned at nearly 2 grand. She didn't have the money and so she came to me, Jenny had made my life a misery when I was still living at home. Just by walking about the house in very revealing outfits, she also walked around in skimpy underwear. I was sure she did it to annoy me and I was happy to out of the house as soon as I could afford my own place. The day after the party I was surprised to be visited by Jenny and after a bit of small talk, she finally told me what had happened and asked me to loan her the money. But I knew she couldn't afford to pay me back and I told her as much and she started to cry. I said I would buy a new vase for Rebecca and she would have to face the music. Jenny then asked me not to make her tell Rebecca and offered to do whatever I wanted. Like what I asked, clean your house or whatever you want me to do she replied. I was thinking of asking about sex but was afraid to ask her. Jenny then said she would let me fuck her and anything I wanted sexually to I wanted. I replied you're kidding me, no I'm not she answered and open her top and unclipped her bra showing her tits. I got an instant hard-on and she noticed it straight away and added we could start then and there. I let my cock rule my head and fucked Jenny and then showered together and then I went and got another vase to replace the broken one. I thought that now the vase was replaced she wouldn't give me any more sex and didn't ask her about it when I dropped off the vase. Then 2 days later I was over visiting my parents on their return and when I was leaving Jenny asked could give a lift on my way home. I nodded and we left together and as we drove away from our parent's place, I asked Jenny where too. Your bed was her reply and she added I still owe you some fucks and so we went to my house and had sex. That was 4 months ago and she is coming once a week for sex, I've told her the debt was paid. She said I like you fucking me and I will fuck for as long as I'm enjoying it. So that's where we are now fucking and I'm enjoying it a lot as well.